Final answer:
Henry's condition of having both ADHD and disruptive mood dysregulation is referred to as comorbidity, which is common in individuals with ADHD.
Step-by-step explanation:
When someone, like Henry, is diagnosed with both ADHD (Attention Deficit Hyperactivity Disorder) and disruptive mood dysregulation, this is referred to as comorbidity. ADHD is a neurodevelopmental disorder that can involve difficulties in maintaining attention, controlling impulses, and managing hyperactive behaviors. Comorbidity is common with ADHD, meaning that individuals with ADHD often have other disorders simultaneously, such as mood dysregulation, depression, or OCD (Obsessive-Compulsive Disorder).